DE69025669T2 - Übertragungssystem mit optischem Zwischenverstärker - Google Patents

Übertragungssystem mit optischem Zwischenverstärker

Info

Publication number
DE69025669T2
DE69025669T2 DE69025669T DE69025669T DE69025669T2 DE 69025669 T2 DE69025669 T2 DE 69025669T2 DE 69025669 T DE69025669 T DE 69025669T DE 69025669 T DE69025669 T DE 69025669T DE 69025669 T2 DE69025669 T2 DE 69025669T2
Authority
DE
Germany
Prior art keywords
transmission system
optical repeater
repeater
optical
transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69025669T
Other languages
English (en)
Other versions
DE69025669D1 (de
Inventor
Eiichi Nishimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Publication of DE69025669D1 publication Critical patent/DE69025669D1/de
Application granted granted Critical
Publication of DE69025669T2 publication Critical patent/DE69025669T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
    • H04B10/2572—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to forms of polarisation-dependent distortion other than PMD
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • H04B10/293—Signal power control
    • H04B10/2933—Signal power control considering the whole optical path
    • H04B10/2935—Signal power control considering the whole optical path with a cascade of amplifiers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Lasers (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Couplings Of Light Guides (AREA)
DE69025669T 1989-08-07 1990-08-01 Übertragungssystem mit optischem Zwischenverstärker Expired - Fee Related DE69025669T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1202814A JPH0367231A (ja) 1989-08-07 1989-08-07 光中継伝送方式

Publications (2)

Publication Number Publication Date
DE69025669D1 DE69025669D1 (de) 1996-04-11
DE69025669T2 true DE69025669T2 (de) 1996-10-10

Family

ID=16463645

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69025669T Expired - Fee Related DE69025669T2 (de) 1989-08-07 1990-08-01 Übertragungssystem mit optischem Zwischenverstärker

Country Status (6)

Country Link
US (1) US5060301A (de)
EP (1) EP0412717B1 (de)
JP (1) JPH0367231A (de)
AU (1) AU627062B2 (de)
CA (1) CA2022690C (de)
DE (1) DE69025669T2 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU675424B2 (en) * 1992-04-03 1997-02-06 Telstra Corporation Limited Improvements to optical phase shifting
WO1993020475A1 (en) * 1992-04-03 1993-10-14 Australian And Overseas Telecommunications Corporation Limited Improvements to optical phase shifting
WO1993025014A1 (en) * 1992-06-01 1993-12-09 Telstra Corporation Limited An optical isolator and an optical telecommunications system
JP2856295B2 (ja) * 1992-04-17 1999-02-10 ケイディディ株式会社 光増幅中継伝送システム
EP0570151B1 (de) * 1992-05-08 1997-10-29 Kokusai Denshin Denwa Co., Ltd Optischer Sender mit Lichtsignal von geringem Polarisationsgrad und optische entpolarisierende Schaltung
US5535968A (en) * 1992-07-27 1996-07-16 Union Switch & Signal Inc. Vital railway signal link
EP0591042B1 (de) * 1992-09-29 1997-05-28 Nippon Telegraph And Telephone Corporation Multi/Demultiplexer mit Gitter aus gruppierten Wellenleitern und zurückgefürten optischen Wegen
US5361270A (en) * 1993-08-18 1994-11-01 At&T Bell Laboratories Apparatus and method employing polarization modulation to reduce effects of polarization hole burning and/or polarization dependent loss
JPH0993200A (ja) * 1995-09-27 1997-04-04 Nec Corp 光増幅中継伝送装置
FR2781320B1 (fr) * 1998-07-06 2000-08-18 Alsthom Cge Alcatel Dispositif de compensation de la dispersion de polarisation des canaux dans un signal a multiplexage en longueur d'onde
JP2003060576A (ja) 2001-08-22 2003-02-28 Nec Corp 偏波スクランブラユニット及びこれを用いた多中継伝送システム
US7151814B1 (en) * 2002-11-07 2006-12-19 Applied Micro Circuits Corporation Hogge phase detector with adjustable phase output
US7504677B2 (en) * 2005-03-28 2009-03-17 Freescale Semiconductor, Inc. Multi-gate enhancement mode RF switch and bias arrangement

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3722982A (en) * 1971-10-26 1973-03-27 Westinghouse Electric Corp Coherent optical processing method and system having improved signal-to-noise ratio utilizing polarizing filters
DE3671986D1 (de) * 1985-03-18 1990-07-19 Nec Corp Vorrichtung zur regelung der polarisation mit einem strahlteiler.
JPS63311331A (ja) * 1987-06-15 1988-12-20 Nippon Telegr & Teleph Corp <Ntt> 光増幅装置
JPS6426826A (en) * 1987-07-23 1989-01-30 Kokusai Denshin Denwa Co Ltd Optical amplification system
JPS6461735A (en) * 1987-09-01 1989-03-08 Fujitsu Ltd Arrangement structure of progressive wave type optical amplifier
JPS6461079A (en) * 1987-09-01 1989-03-08 Nec Corp Semiconductor laser light amplifier
US4947134A (en) * 1987-10-30 1990-08-07 American Telephone And Telegraph Company Lightwave systems using optical amplifiers
US4900917A (en) * 1988-07-15 1990-02-13 American Telephone And Telegraph Company, At&T Bell Laboratories Polarization insensitive optical communication device utilizing optical preamplification

Also Published As

Publication number Publication date
CA2022690C (en) 1994-07-05
CA2022690A1 (en) 1991-02-08
DE69025669D1 (de) 1996-04-11
AU6028790A (en) 1991-02-07
US5060301A (en) 1991-10-22
AU627062B2 (en) 1992-08-13
EP0412717B1 (de) 1996-03-06
EP0412717A2 (de) 1991-02-13
EP0412717A3 (en) 1992-03-18
JPH0367231A (ja) 1991-03-22

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee